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    Question

    ‘A’ can do a piece of work in 10 days. ‘B’ can

    do 80% of the same work in 12 days. If they work together for the entire time and get paid Rs.1200, then find the share of ‘A’.
    A Rs.1175 Correct Answer Incorrect Answer
    B Rs.1250 Correct Answer Incorrect Answer
    C Rs.720 Correct Answer Incorrect Answer
    D Rs.1000 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Let the total work be 60 units. (LCM of 10 and 12) Efficiency of A = 60/10 = 6 units/day Efficiency of B = (60/12) × (80/100) = 4 units/day Ratio of the efficiency of A : B = 6 : 4 = 3:2 Share of A = (3/5) × 1200 = Rs.720

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